Hello Sergren, the indication of overload, can come for several reasons
1) The fan motor, outside resistive value is usually between 20 and 30 ohms, to measure it you must disconnect it from the circuit, if it is out of value you must replace it, it is very important that you get the same type of motor or fan assembly
2) The damaged output circuit, you can access the legs of the integrated power circuit RSN3305, taking off the lid that is in the base of the equipment, you must cut the grips that it brings, once the lid is removed, the legs of the integrated circuit are undone and remove it, then test the equipment that does not overload the display, if it does not appear the problem is in the output integrated and you must replace it
Several offers of sale of this integrated appear in Internet, confirms that it is a new and original spare, there are many that offer spare parts of disarmament
I sent you the link to download the SA-EX100 service manual
I hope you can solve the problem
Greetings Franco Dosil

Hello Johnny, for what you comment, the noise Leo produces the Rec-Play key inside your RS-M7
Take out the lid and you'll find on the main plate, a long piece of metal, that on the Rec-Play key
Use some contact cleaner or a couple of drops of DW-40 and apply them by one of the ends of the key,
With the equipment off, put a cassette and press the keys Rec and Play, then Stop and repeat the sequence several times, you will see that the key moves a slide, where you put the cleaner
Then connect again, turn on Play and it should work fine
If not, consult a specialized technical service
I hope I can solve the problem
Greetings Franco Dosil

Hello Irena, check that the power cable is properly placed on the back of your Technics and also make sure that it is properly placed on the side of the power outlet, controls the outlet, works well, connecting a lamp, if it's OK, use it for the CD player
if it keeps failing you, there you would have, a problem inside the device
I suggest you look for a specialized technical service
Greetings Franco Dosil

if you open the panel look around for some blown fuses. be sure to unplug the receiver before and let it sit because there are two capacitors in there that hold a lethal charge of electricity. it could be a fuse but most likely its dead. probably a transformer or amp failure.

Sounds like the gear that rotates the cd tray it stripped. Another possibility it that the lithium grease is drying which with make it stick. You can fix it that’s the problem, unplug it, take the cover off and use q tips to wipe off the dry grease and using q tips put some new lithium grease on the gears. Very lightly and don’t get cotton stuck in there